With millions of people across the globe suffering from hearing loss, hearing aids are a boon. These small electronic devices have the ability to amplify sound, thus enabling many hearing impaired people hear normally. Hearing aids have a microphone for catching sound waves, an amplifying assembly for magnifying the sound waves, a small loudspeaker that sends the amplified sound to the auditory canal and a battery that acts as a power source. They can also have earpieces to direct the sound into the ear, which enhances the sound quality. There are many designs of hearing aids available in the market to suit people with different lifestyles and extent of hearing loss.
It has been estimated that only a fraction of people that need hearing aids actually use them, because of the cost or embarrassment on being spotted with a hearing aid. However, these days hearing aids are available in different varieties to suit the pocket, and are quite small to be easily spotted by everyone. The older variant of the hearing aids were BTE (Behind the Ear aids), which are still popular. However, mini BTE has been introduced now, which is much smaller and comfortable. Other varieties include In The Ear aids and In The Canal and Completely In Canal hearing aids, which are fitted in the ear canal and are much smaller.
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